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Big Power 454 Aluminum Assembled LSR Short Block
Big Power 454 Aluminum Assembled LSR Short Block
Big Power 454 Aluminum Assembled LSR Short Block
Big Power 454 Aluminum Assembled LSR Short Block
Big Power 454 Aluminum Assembled LSR Short Block
Big Power 454 Aluminum Assembled LSR Short Block
Big Power 454 Aluminum Assembled LSR Short Block
$ 15,500.00

Big Power 454 Aluminum Assembled LSR Short Block

+

Only left in stock

1,500 HP Capable

Premium LSR short block assembled and proven by Mast Motorsports.  Assembled with MADE in the USA parts


    454 Cubic Inch

    • LSR Tall Deck
    • ARP Hardware
    • Callies Magnum Crank
    • Callies Ultra Rods
    • 4.125 Bore
    • 4.250 Stroke
    • 6.460 Rod Length
    • Compression Height 1.150
    • Wiseco Premium Coated Piston

     

    LSR Block Features


    • 100% Made in USA
    • 356 T6 Premium Aluminum
    • Spun Ductile Iron Sleeves
    • Cross Braced Lifter Valley with Individual Drain Backs
    • 40% larger Main Cap Surface with a Double Crossbolt Option
    • Short or Tall deck blocks feature a Heavy Duty 0.750" deck thickness
    • Added Stock to the Front and Rear Valley Walls
    • Added 7th Transmission Bolt Hole to Accept Early Style GM Transmission
    • Maximized Cranksaddle Radius​
    • Front Oil Feed Line Can Be Restricted for Mechanical Lifter Options
    • 6 Bolt Cylinder Head Pattern
    • All OEM LSX parts such as covers, pans and accessories work seemlessly with the LSR

     

    LSR Block Specs

    • Standard Deck:  9.240"
    • Tall Deck: 9.720
    • Bore Range: 4.065-4.190
    • Weight: 113lbs w/main caps

     

     LSR Block Options

    • ARP Main Stud Options
    • Cam Bore Can Be Machined to Accept 60mm Roller Bearings
    • Lifter Bore can accept larger bore or key way style lifter
    • Double Cross Bolt Option- Increases to 8 Bolt Main